Furnace-door attachment



Nov. 19, 1929.

F. B. coWDRlcK 1,736,521

FURNACE DOOR ATTACHMENT Filed ApIfil 1'6, 1929 /IV VEN TOR.

/Z @y Fralz/B y n Patented Nov. 19, 1929 UNETED ST'S Parser naaien' FURNACE-DOOR ATTACHMENT Application filed April 1G,

This invention, generally stated, relates to furnaces, and has more especial relation to a door therefor.

One of the principal objects of the present invention is to provide a furnace door arranged upon which is a pivotally disposed pendant member for closing and opening the air damper as carried by the furnace door.

A further object of the present invention is to provide an arrangement of parts as above recited which may be utilized for cooperating with a lug upon the furnace door, whereby the door may be unlatched.

Other and further objects of the present invention may be said to reside in the provision of general details of construction and in the arrangement and combination of parts for attaining the results sought by the foregoing objects.

The invention consists of the novel construction hereinafter described and nally claimed.

The nature, characteristic features and scope of the invention will be more fully understood from the following description taken in connection with the accompanying drawings forming part hereof, and in which:

Fig. 1, is a fragmentary view in elevation of a furnace having hinged thereto a door equipped with a device embodying the invention.

Fig. Q, is a view in horizontal section taken upon the line .Q -'2 of Fig. 1.

A Fig. 3, is a view in elevation of the pen-y dant device shown in Fig. 1.

For the purpose of illustrating my invention, I have shown in the accompanying drawings one form thereof which is at present preferred by me, since the same has been found in practice to give satisfactory and reliable results, although it is to be understood that t-he various instrumentalities of which my invent-ion consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of the instrumentalities as herein shown and described.

In the drawings the reference numeral l designates the casing of a furnace hinged to which as at 2 in conventional manner is the leas. ser-iai no. 355,691.

furnace door 3. The furnace vdoor 3 is provided with openings i for the admission of air above the fire bed in the furnace. Arranged for longitudinal, slidable movement vin the rear of the openings 4 is a damper 5 provided with air openings 6. Ordinarily this damper is shifted back and forth by the hands of the attendant in charge and frequently it happens that the damper is so hot that implements have to be used to move the damper. According to the present invention I employ a pendant rod designated 7 which I pivot as at 8 to a stud 9 having fixed relation with the damper 5. This stud 9 is of usual construction and ordinarily the head thereof is used to accommodate the hands of the operator for shifting the damper back and forth. In the present instance I make use of this conventional stud and bend over an end of the rod 7 in hook-like fashion as at 10 for forming the pivotal connection with the stud 9. The stud 9 is free to move back and forth in slot 11 of the fura-nce door 3. The free end of the rod 7 is coiled over upon itself as at 12 to form a linger grip.

In use the attendant in charge grasps the finger piece l2 and moves the rod 7 around its pivot point to either of the positions shown y in dotted lines in Fig. 1. In either of these positions the attendant in charge by proper' movement of the rod 7 may close or open the damper in the furnace door 3 without danger of having his hands burned from an overheated furnace door. Carried by the furnace door 3 is a fixed lug 13. By moving the rod 7 to the position shown in dotted lines at the right hand side of 1 with the rod engaging beneath the lug 13 slight upward movement of the outer end of rod 7 will cause disengagement of the. latch 14: from lip 15, whereby the furnace door 3 may be opened without danger of the attendant in charge having his hands burned by an over-heated furnace door. The advantage of this is readily apparent in that with an over-heated furnace door it frequently becomes necessary either to use gloves or other protection for the hands in opening the furnace door, or, as is frequently done, to use an implement or CII tool to cause disengagement of the furnace door or desired movement of the damper.

I am aware that the invention may be embodied in other specific forms Without departing from the spirit or essential attributes thereof, and I therefore desire the present embodiment to be considered in all respects as illustrative and not restrictive, reference being had to the appended claim rather than to the foregoing description to indicate the scope of the invention.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

In a furnace construction, a slotted and hinged door including a latch therefor, a lug fixed to said hinged door, a longitudinal slidable damper for said door, a studiixed to the damper and slidable through said slot, and a pendant member pivoted to said stud whereby horizontal positions of said pendant member may be obtained for shift ing said damper longitudinally, and whereby in one of the horizontal positions of said f pendant member it may be caused to engage beneath said lug to unlatch saidl hinged door.

FRANK B. COVVDRCK. 

